I'm in highschool and there's this kid in my group who will make fun of every little thing I do and it really gets to me. He'll make fun of me for really insignificant shit so I'm pretty sure it's some kind of way to assert dominance over me. For example, I was eating lunch and took out a cheese stick but the plastic was impossible to take off so I just put it back in my lunch box. This kid turns to the person next to him and says "look at u/imaginethegainz, he couldn't unwrap his cheese so he just put it away huehuehue what an idiot." What pisses me off is that I don't even talk to this guy but he still does shit like that which lowers my reputation by making me look like an idiot and also shows everyone that I'm a pushover. I normally respond by laughing nervously or just ignoring him, but of course he keeps doing it. Yes, I know that I need to lift and I have been for a while but I'm still a skinny fuck at this point in time. How should I respond to him next time? I can provide more details if it's needed. Thanks!